Sürdürülebilir Kalkınma Amaçları

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Yazarlar

• Bakır Gür, Eda(1)
• Bakır, E.(1)
• Coşanay, H.(1)
• Gür, M.(1)
• Işık, Erdem(1)
• Selimefendigil, F.(1)
• Uçar, Aynur(1)
• Öztop, H.F.(1)

• MakaleAçık Erişim2026Scopus SJRQ1/r/munzur/752
  Numerical analysis of PCM integrated in solar dryers for thermal efficiency

  Bakır Gür, Eda; Işık, Erdem; Uçar, Aynur

  Solar dryers using phase change materials buffer heat, yet the combined influence of airflow regime and PCM placement on melting remains underexplored. A controlled like-for-like study fixed geometry and PCM properties while varying placement and operating conditions. A 3D transient CFD model simulated a forced-convection dryer with RT28HC over Re = 3000–9000 and inlet temperatures Ti = 50–60 °C. Raising either Re or Ti shortened melt time, and three-wall coverage melted faster and more uniformly than a rear-wall-only layout. For three walls, melt time dropped from 13 h (50 °C, Re = 3000) to 7 h (60 °C, Re = 9000) (−46 %) for the rear wall it fell from 19 h to 11 h (−42 %). A 10 °C increase in Ti reduced overall melt time by 4 h across Re. Practically, three wall PCM with Re ≥ 6000 at Ti = 60 °C achieved reliably 7–9 h melting, enabling late afternoon heat release without auxiliary heating.

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  AtıfScopus17·WoS16·OpenAlex12

  İncele
• MakaleAçık Erişim2023Scopus SJRQ2/r/munzur/2659
  Effects of İnclined Plate in a Channel to Control Melting of PCM in a Body İnserted on the Bottom Wall

  Öztop, H.F.; Bakır, E.; Selimefendigil, F.; Gür, M.; Coşanay, H.

  A two-dimensional time-dependent computational analysis was carried out to examine the effects of inclined plate on melting time of Phase Change Material (PCM) filled square block on the bottom wall of a channel. Solution of the governing equations are performed by using finite volume method. The RT25HC material is chosen as PCM. The study is done for different parameters of inclination angle of the plate and Reynolds number. It is observed that the inclined plate can be used to control of melting time of PCM in a block as well as flow field and temperature distribution in the channel. Using of acceleration angle as θ = 110° accelerates the melting time of PCM inside the block. Thus, mass fraction rate increases 4 times with application of inclined thin plate.

  AtıfScopus31·WoS27·OpenAlex29

  İncele